106 lines
3.0 KiB
C
106 lines
3.0 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
|
||
|
|
* Copyright (c) 2015-2017 The strace developers.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
* 3. The name of the author may not be used to endorse or promote products
|
||
|
|
* derived from this software without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "defs.h"
|
||
|
|
#include "print_fields.h"
|
||
|
|
#include "xlat/kcmp_types.h"
|
||
|
|
|
||
|
|
struct strace_kcmp_epoll_slot {
|
||
|
|
uint32_t efd;
|
||
|
|
uint32_t tfd;
|
||
|
|
uint32_t toff;
|
||
|
|
};
|
||
|
|
|
||
|
|
static void
|
||
|
|
printpidfd(struct tcb *tcp, pid_t pid, int fd)
|
||
|
|
{
|
||
|
|
/*
|
||
|
|
* XXX We want to use printfd here, but we should figure out which
|
||
|
|
* process in strace's PID NS is referred to first.
|
||
|
|
*/
|
||
|
|
tprintf("%d", fd);
|
||
|
|
}
|
||
|
|
|
||
|
|
#define PRINT_FIELD_PIDFD(prefix_, where_, field_, tcp_, pid_) \
|
||
|
|
do { \
|
||
|
|
STRACE_PRINTF("%s%s=", (prefix_), #field_); \
|
||
|
|
printpidfd((tcp_), (pid_), (where_).field_); \
|
||
|
|
} while (0)
|
||
|
|
|
||
|
|
SYS_FUNC(kcmp)
|
||
|
|
{
|
||
|
|
pid_t pid1 = tcp->u_arg[0];
|
||
|
|
pid_t pid2 = tcp->u_arg[1];
|
||
|
|
int type = tcp->u_arg[2];
|
||
|
|
kernel_ulong_t idx1 = tcp->u_arg[3];
|
||
|
|
kernel_ulong_t idx2 = tcp->u_arg[4];
|
||
|
|
|
||
|
|
tprintf("%d, %d, ", pid1, pid2);
|
||
|
|
printxval(kcmp_types, type, "KCMP_???");
|
||
|
|
|
||
|
|
switch (type) {
|
||
|
|
case KCMP_FILE:
|
||
|
|
tprints(", ");
|
||
|
|
printpidfd(tcp, pid1, idx1);
|
||
|
|
tprints(", ");
|
||
|
|
printpidfd(tcp, pid1, idx2);
|
||
|
|
|
||
|
|
break;
|
||
|
|
|
||
|
|
case KCMP_EPOLL_TFD: {
|
||
|
|
struct strace_kcmp_epoll_slot slot;
|
||
|
|
|
||
|
|
tprints(", ");
|
||
|
|
printpidfd(tcp, pid1, idx1);
|
||
|
|
tprints(", ");
|
||
|
|
|
||
|
|
if (umove_or_printaddr(tcp, idx2, &slot))
|
||
|
|
break;
|
||
|
|
|
||
|
|
PRINT_FIELD_PIDFD("{", slot, efd, tcp, pid2);
|
||
|
|
PRINT_FIELD_PIDFD(", ", slot, tfd, tcp, pid2);
|
||
|
|
PRINT_FIELD_U(", ", slot, toff);
|
||
|
|
tprints("}");
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
case KCMP_FILES:
|
||
|
|
case KCMP_FS:
|
||
|
|
case KCMP_IO:
|
||
|
|
case KCMP_SIGHAND:
|
||
|
|
case KCMP_SYSVSEM:
|
||
|
|
case KCMP_VM:
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
tprintf(", %#" PRI_klx ", %#" PRI_klx, idx1, idx2);
|
||
|
|
}
|
||
|
|
|
||
|
|
return RVAL_DECODED;
|
||
|
|
}
|